CN202614459U - Great force strain sensor testing device - Google Patents
Great force strain sensor testing device Download PDFInfo
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- CN202614459U CN202614459U CN 201220184274 CN201220184274U CN202614459U CN 202614459 U CN202614459 U CN 202614459U CN 201220184274 CN201220184274 CN 201220184274 CN 201220184274 U CN201220184274 U CN 201220184274U CN 202614459 U CN202614459 U CN 202614459U
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Abstract
The utility model discloses a great force strain sensor testing device, and is characterized in that the testing device comprises an upper balance plate, a lower balance plate, two upper pressing blocks, and two lower pressing blocks; wherein the upper balance plate and the lower balance plate are arranged in parallel and at interval, the two upper pressing blocks are respectively arranged at intervals on a bottom surface of the upper balance plate, the two lower pressing blocks are respectively arranged at intervals on a top surface of the lower balance plate; the two upper pressing blocks and the two lower pressing blocks are respectively abutted against an upper stress surface and a lower stress surface of a sensor elastomer and are arranged at two corresponding discharge holes of the sensor elastomer. The great force strain sensor testing device of the utility model can conveniently perform a performance test of a sensor without a great force force-measuring machine, thereby raising an overhaul efficiency of the sensor, reducing test cost, and ensuring a test precision of the sensor.
Description
Technical field
The utility model relates to a kind of strain gauge transducer proving installation that is worth energetically.
Background technology
Being worth strain gauge transducer energetically is employed a kind of special measurement equipment on the steel plate rolling line, and it has played crucial effect to the quality of steel plate rolling.In order to guarantee the good running status of steel plate in milling train, must individual accurately and fast measurement of rolling force signal be arranged to milling train.So be worth the quality of strain gauge transducer running status energetically is the key factor that guarantees the steel plate rolling quality.
Be worth strain gauge transducer performance after using a period of time on the rolling line energetically deterioration can take place; Needing down machine to carry out performance adjusts and repairs; Being worth under the strain gauge transducer machine trimming energetically need test the foil gauge in the sensor measurement zone, finds out the reason of sensor generation deterioration.For rectangular sensor, its nominal load F=0.0001 * B * L (MN), B and L are respectively the length of sensor and wide, that is to say that the setting of sensor nominal load is relevant with its lifting surface area.As depicted in figs. 1 and 2; The elastic body 1 of general sensor has been beaten M round 2 in the longitudinal direction; Post foil gauge in each round respectively and be carried in the power value on the sensor stress surface in order to measurement, each round is measured section as one, and then whole sensor is made up of M measurement section.Usually when sensor is tested, need to adopt the force measuring machine of value energetically to act on the last stress surface 11 and lower stress face 12 of sensor elastomer 1, test and dynamic temp compensation is tested with the zero compensation of implementing sensor; But the nominal load that generally is worth strain gauge transducer energetically is all between 3MN to 60MN; The force measuring machine price of value is very expensive so energetically, and this just makes troubles to the reparation of sensor, or sensor is sent test outside; Improve the cost that sensor is repaired, influenced remediation efficiency.
Summary of the invention
The utility model technical matters to be solved provides a kind of strain gauge transducer proving installation that is worth energetically; Utilize this proving installation can need not to be worth energetically the convenient performance test of implementing sensor of force measuring machine; Improved the overhaul efficiency of sensor; Reduce testing cost, guaranteed the precision of sensor test.
For solving the problems of the technologies described above; The utility model is worth the strain gauge transducer proving installation energetically and comprises equal pressing plate, following equal pressing plate, two upper holder blocks and two lower lock blocks; Said equal pressing plate and the down equal pressing plate parallel interval layout of; Said two upper holder blocks are positioned at the said equal pressing plate bottom surface of respectively at interval; Said two lower lock blocks are positioned at interval said equal pressing plate end face down respectively, and said two upper holder blocks and two lower lock blocks are respectively against the last stress surface and the lower stress face of sensor elastomer and be positioned at two corresponding round places of sensor elastomer.
Further, said two upper holder blocks are consistent against the lifting surface area of each round measurement section of area and sensor elastomer of sensor elastomer with two lower lock blocks.
Further, this proving installation also comprises liner plate and following liner plate, said go up liner plate and following liner plate lay respectively at said two upper holder blocks bottom surface and two lower lock blocks end face and be sandwiched in the last stress surface and the lower stress face of sensor elastomer.
Because the utility model is worth the strain gauge transducer proving installation energetically and has adopted technique scheme; Be that this proving installation comprises equal pressing plate, following equal pressing plate, two upper holder blocks and two lower lock blocks; Go up equal pressing plate and down equal pressing plate parallel interval layout; Two upper holder blocks are positioned at equal pressing plate bottom surface respectively at interval; Two lower lock blocks are positioned at equal pressing plate end face down respectively at interval, and two upper holder blocks and two lower lock blocks are respectively against the last stress surface and the lower stress face of sensor elastomer and be positioned at two corresponding round places of sensor elastomer.This proving installation can need not to be worth energetically the convenient performance test of implementing sensor of force measuring machine, has improved the overhaul efficiency of sensor, has reduced testing cost, has guaranteed the precision of sensor test.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify:
Fig. 1 is for be worth the structural representation of strain gauge transducer energetically;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is worth the structural representation of strain gauge transducer proving installation energetically for the utility model;
Fig. 4 is for be worth the measurement bridge circuit of strain gauge transducer energetically.
Embodiment
As shown in Figure 3; The utility model is worth the strain gauge transducer proving installation energetically and comprises equal pressing plate 3, down equal pressing plate 4, two upper holder blocks 5 and two lower lock blocks 6; Said equal pressing plate 3 and the down equal pressing plate 4 parallel interval layout of; Said two upper holder blocks 5 are positioned at said equal pressing plate 3 bottom surfaces of respectively at interval; Said two lower lock blocks 6 are positioned at interval said equal pressing plate 4 end faces down respectively, and said two upper holder blocks 5 and two lower lock blocks 6 are respectively against the last stress surface and the lower stress face of sensor elastomer 1 and be positioned at two corresponding round 2 places of sensor elastomer 1.
Further; Said two upper holder blocks 5 are consistent against the lifting surface area of each round 2 measurement section of area and sensor elastomer of sensor elastomer 1 with two lower lock blocks 6; Act on respectively as on the round of measuring section with the power that guarantees two upper holder blocks and two lower lock blocks, thereby guarantee the measuring accuracy of this device.
Further, this proving installation also comprises liner plate 7 and following liner plate 8, said go up liner plate 7 and following liner plate 8 lay respectively at said two upper holder blocks 5 bottom surface and two lower lock blocks 6 end face and be sandwiched in the last stress surface and the lower stress face of sensor elastomer 1.Being provided for of last liner plate and following liner plate provides effective protection to sensor, avoids about the sensor elastomer stress surface to receive the pressure of two upper holder blocks and two lower lock blocks and damages.
The processing request of the equal up and down pressing plate in this proving installation, two upper holder blocks and two lower lock blocks is that the plane flatness is not more than 0.025mm, and the depth of parallelism is not more than 0.025mm, and surface smoothness is Ra0.4 μ m.
To M round of sensor, suppose that the foil gauge in the independent round is measured section as one, whole sensor is measured section by M and is formed.So can know that from the measuring principle of sensor a stressed load of measuring section is the 1/M of whole sensor nominal load measured value.If it is average setting M the foil gauge stickup back performance of measuring section, can draw such conclusion: can go with the 1/M of sensor nominal load sensor is done zero compensation test and dynamic temp compensation test.
The measuring principle of strain-type force sensor is to utilize the principle of the stressed change in resistance of foil gauge simultaneously; The foil gauge that is attached in each round of sensor elastomer is formed a bridge circuit; When the stressed generation deformation of sensor elastomer; The resistance of foil gauge changes, the electric bridge out of trim, and the signal value of its output becomes certain ratio with the suffered power value of sensor.
Be exactly be worth the measuring principle that strain-type force sensor has been used in the measurement of strain gauge transducer energetically, it is as shown in Figure 4 that it measures bridge circuit, Zong on sensor elastomer, have M round; By N round is one group; Foil gauge Rn in N round is through string and connect to form two of electric bridge and measure brachium pontis R1 and R3, and electric bridge both sides in addition is a brachium pontis with fixed resistance R2 and R4, constitutes a half-bridge circuit; E is a bridge circuit voltage, and e is electric bridge output signal and has reflected the power value that sensor is suffered.
Suppose that sensor measurement power value is K; Through this proving installation sensor is pressed; Keep sensor stressed evenly, and power vertically act on the sensor measurement face, reinforcing on two upper holder blocks of this proving installation and two rounds of two lower lock block difference respective sensor; Two foil gauge Rn that measure in the brachium pontis of the corresponding bridge circuit of the foil gauge in these two rounds; The foil gauge of measuring other rounds in the brachium pontis adopts high-precision fixed resistance to substitute, and the suffered power value of two rounds of sensor should be 2K/M, so with regard to the force measuring machine of a little range capable of using the foil gauge that the strain-type of corresponding nominal load K is worth sensor is energetically carried out performance test.
As shown in Figure 4; When the imbalance of bridge circuit was exported behind calculating sensor elastic body pressurized, e was the output signal, and E is a bridge circuit voltage; R1 and R3 measure pairing foil gauge resistance on the brachium pontis, and Δ R1 and Δ R3 are the resistance changes behind the foil gauge pressurized behind the pressurized.
Then: e=1/4 (Δ R1/R1+ Δ R3/R3) E
e=1/4K(ξ1+ξ3)E
Reach a conclusion from top formula: the strain that when the bridge measurement brachium pontis is linked two foil gauges, produces is addition.Therefore this proving installation can drive up and down all pressing plates through the motor-driven transmission gear; All pressing plate is positioned on the stress surface of two rounds of sensor through two upper holder blocks and two lower lock blocks up and down; Force measuring machine through the 500t foil gauge that carries out being pasted in these two rounds is tested and is compensated again, reaches the purpose of repairing sensor.
This proving installation makes that being worth strain gauge transducer energetically can adopt the small value force force measuring machine to carry out the performance test operation; Made things convenient for and be worth the service work of strain gauge transducer energetically in the production scene; When improving overhaul efficiency, reducing cost, can guarantee the measuring accuracy of sensor.
Claims (3)
1. one kind is worth the strain gauge transducer proving installation energetically; It is characterized in that: this proving installation comprises equal pressing plate, following equal pressing plate, two upper holder blocks and two lower lock blocks; Said equal pressing plate and the down equal pressing plate parallel interval layout of; Said two upper holder blocks are positioned at the said equal pressing plate bottom surface of respectively at interval; Said two lower lock blocks are positioned at interval said equal pressing plate end face down respectively, and said two upper holder blocks and two lower lock blocks are respectively against the last stress surface and the lower stress face of sensor elastomer and be positioned at two corresponding round places of sensor elastomer.
2. the strain gauge transducer proving installation that is worth energetically according to claim 1 is characterized in that: said two upper holder blocks are consistent against the lifting surface area of each round measurement section of area and sensor elastomer of sensor elastomer with two lower lock blocks.
3. the strain gauge transducer proving installation that is worth energetically according to claim 1 and 2; It is characterized in that: this proving installation also comprises liner plate and following liner plate, said go up liner plate and following liner plate lay respectively at said two upper holder blocks bottom surface and two lower lock blocks end face and be sandwiched in the last stress surface and the lower stress face of sensor elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184274 CN202614459U (en) | 2012-04-27 | 2012-04-27 | Great force strain sensor testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184274 CN202614459U (en) | 2012-04-27 | 2012-04-27 | Great force strain sensor testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614459U true CN202614459U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220184274 Expired - Fee Related CN202614459U (en) | 2012-04-27 | 2012-04-27 | Great force strain sensor testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202614459U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509932A (en) * | 2014-10-10 | 2016-04-20 | 意法半导体股份有限公司 | Pressure sensor, testing device and related method |
| CN113776708A (en) * | 2021-08-09 | 2021-12-10 | 河南省计量科学研究院 | Multi-sensor parallel force value measuring method |
-
2012
- 2012-04-27 CN CN 201220184274 patent/CN202614459U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509932A (en) * | 2014-10-10 | 2016-04-20 | 意法半导体股份有限公司 | Pressure sensor, testing device and related method |
| US10788389B2 (en) | 2014-10-10 | 2020-09-29 | Stmicroelectronics S.R.L. | Pressure sensor with testing device and related methods |
| CN113776708A (en) * | 2021-08-09 | 2021-12-10 | 河南省计量科学研究院 | Multi-sensor parallel force value measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20160427 |